Methodology and Report Quality Evaluation of Sports Randomized Controlled Trials in China（2010—2020）

Cochrane bias risk assessment tool and CONSORT 2010 list were used to evaluate bias risk and report quality of 168 randomized controlled trials from 9 sports journals in Chinese Social Science Citation Index(CSSCI) from 2010 to 2020. Bias risk:The proportion of risk “uncertainty” is the highest, and selectivity bias, performance bias and other bias are more obvious; the proportion of “low risk” comes second, mainly involving reporting bias, detection bias and attrition bias; the proportion of “high risk” is the lowest, mainly focusing on performance bias, attrition bias and other bias. Report quality: The quality of background purpose, recruitment, outcome indicators, statistical method and explanation part report is high; the quality of summary, intervention measures, subject flow, baseline and outcomes assessment report is medium; and the quality of title, trails design, eligibility criteria,sample size, randomization, blind method and limitation report is low. Conclusions: There is room for improvement in the bias control and reporting quality of sports RCT research in China. Suggestions: Reduce the risk of bias through strictly control on randomization, blind method implementation, loss of subjects, etc.; improve items of the report such as title, source of subjects,determination of sample size, intervention measures, statistical methods and outcome indicators, so as to improve the report quality.